Hermetic closure for receptacles.



PATENTED MAY 1, 1906.

W. A. LORENZ. HBRMBTIG CLOSURE FOR REGBPTAGLES.

Fig. 6

Witness as I nvantm' M i/ZZ/mm/ aflLm 'enz f By W PATENT OFFICE.

WILLIAM A. LORENZ, OF HARTFORD, CONNECTICUT.-

HERMETIVC CLOSURE FOR RECEPTACLES.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed November 17, 1904- Serial No. 233,087-

To all whom it may concern.-

Be it known that I, WILLIAM A. LORENZ, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Hermetic Closures for Receptacles, of which the following is a full, clear, and exact specification.

This invention relates to improvements in closures for the hermetic sealing of jars, tumblers, and other receptacles; and it consists in improved means whereby the cap and the gasket are combined so that the latter is secured against displacement during handling and sealing.

Although applicable to many styles of receptacles, the invention is here shown and described in connection with an ordinary glass tumbler as an example of a useful type of receptacle with which the invention may be advantageously employed.

Figures 1 and 2 are fragmentary sectional side views of the top -0f a tumbler with its gasket and cap, Fig. 1 showin the parts in their exhausting or air-expel ing position, while Fig. 2 shows the closure in its sealed position. Fig. 3 is a fragmentary side view similar to Fig. 1, showing the outward appearance of the cap and tumbler. Fig. 4 is a fragmentary sectional side view of a modified form of cap. Figs. 5 and 6 are fragmentary side views of the cap and gasket of Fig. 4 in position on a tumbler,-Fig. 5 being in section and Fig. 6 showing the outward appearance of the cap. Fig. 7 is a fragmentary side view of a tumbler with another modified form of cap. Fig. 8 shows the outward appearance of a tumbler sealed with the closure of Fig. 7.

The cap 11, Figs. 1, 2, and 3, has the lower edge of its rim 14 turned in to form an u wardly-facing groove 13, which receives t e lower edge of the gasket 16 and retains the gasket against displacement from the cap, the inner side of the groove forming an upwardly-pro'ectin shoulder 15 for confining the lower e ge of t egasket against inward displacement. The cross-section of the gasket 16 herein shown is approximately that of a rhomboid or rhombus, the two opposite parallel sides of which are coincident with the cylindrical inner and outer faces of the gas ket. The adjacent surfaces of the cap and gasket are preferably formed to fit each other, so that the gasket forms a linin for the inner surface of the flaring rim 30 o the cap. The gasket may be inserted into the cap at any convenient time prior to the placing of the cap on the tumbler 21, and when so inserted it is securely held into the cap by the groove 13, so that the combined cap and gasket may be handled and shipped without danger of separation. The gaskets and ca s may be assembled before reaching the pee ing-house, thus simplifying and expe iting operations by avoiding the necessity of stretching the gasket separately over the ar. The top of the cap 11 is preferabl indented to provide its under surface wit a downwardly-facing groove 12, which rece ves the upper ed e of the gasket 16 and assists to revent t e gasket from bein displaced by handling and from being crow ed upward by the tumbler-rim 22 when the cap is pressed down, the inner side of the groove forming a downwardly-projecting shoulder 17 for confining the u per edge of the gasket against inward disp acement. In the ordinary hot processing of fruits and other goods the filled jar with the cap and gasket in place is put into a steam-chamber and cooked or heated. During this time the cap is held down by some extraneous means to prevent it from being displaced by the air which is forced out of the receptacle by the action of the heat. At such times the gasket is liable to be forced downwardly beyond the rim of the cap by the outgoing air, and thus displaced from its proper sealing position. With the present invention the groove 13 and shoulder 15 effectually revent this displacement of the gasket and kee the parts in position to insure an effectua seal.

In Figs. 4, 5, and 6 the ca 26 is provided at its to with a downward y-facing groove 27 and s oulder 32 similar to the groove 12 and shoulder 17 of the cap 11. The lower groove, however, is an interrupted groove, the edge of the cap-flange being turned inwardly at intervals only, as at 28, thus sup orting the inner lower margin of the gasket By a series of short grooves and shoulders instead of by a continuous groove and shoulder, as in Fig. 1. The edge of the flange is preferably turned inwardly sli htly at the intervals 29 between the short s oulders, so as not toleave a sharpi edge on the bottom of the cap which wou be liable to injure the hands in the subsequent handling of the sealed package.

In Fig. 7 the downwardly projecting-shoul- 5 paper,

de r with which the cap 36 is provided for sustalmng the upper edge of the gasket 16 is not made integral with the cap, as in Figs. 1 to 6, but is formed by the-inner holder 41 of which 5 the cylindrical portion 42 fits within a corresponding cylindrical portion 40 of the cap and projects therefrom far enough to provide the desired supporting-shoulder for the gasket. The inner holder 41 also serves a useful pugpose in covering the contents of the jar an keeping the cap and contents from commg in contact with each other or injuriously affecting each other. Theinner holder .41 may be made of paraflined or waterproofed lass, sheet metal, or other-suitable materia When m de of sheet metal,-the metal should eit be non-corrosive or be protected by a coating of suitable lacquer or enamel. A down wardly-facing roove 43 is preferably provided in the top of the cap 36 for receiving the upper annular edge of the inner holder 41 to guard against the collapse of the holder under the strain of the gasketpressure in the sealing operation. In order to still further secure the gasket 16 within the cap,- the upwardly-projecting shoulder may be pressed against the lower inner margin of the gasket so as to pinch the gasket against the adjacent face of the flange, as shown at 31 in Fig. 5, and thus more surely secure the asket to the cap, so as to prevent the gasket 0111 being pushed upward out of place by the sealing edge of the receptacle when pressure is applied to the cap, even war movement.

I claim as my invention 1. The'combination with a asket, of a flanged cap provided with a ownwardlyprojecting shoulder for engaging the upper margin of'the inner face of the gasket and provided with an upwardly-projecting shoulde'r for engaging the lower margin of the iii-- 50 ner face of the gasket.

2. A closurefor hermetically-sealed receptacles, comprising a gasket having an approximately cylindrical face and an adjacent face forming an oblique angle therewith, and a cap'having a gasket-receiving seat, aportion. of whichis inclined in substantial accordance with the oblique face of thegasket,

' and having the lower edge of its rim turned inwardly beneath the edge of the gasket.

A closure for hermetically-sealed receptacles, comprising a. gasket havingv an approximately cylindrical face and an adjacent face forming an obliqueangle therewith, and a cap havin a gasket-receiving seat, a por-- is inclined in substantial acthough no supporting-shoulderis provided in the (gasket in position and prevent its upcordance with the oblique face of the gasket,

and having the lower edge of its rim turned inwardly to form an upwardly-facing groove to support the edge of the gasket.

4. A closure for hermetically-sealed receptacles, comprising a gasket havin proximately rho mbic or rhomboi al crosssection, the inner and outer faces of which are an ap- I mately cylindrical face and an adjacent face forming an oblique angle therewith, and a cap having a gasket-receiving seat, a portion of which is inclined in substantial accordance with the oblique face of the gasket-and provided with means for pinching the lower margin of the gasket. 4

6. The'combination with a receptacle, of a hermetic-sealing closure, comprising a, gasket having an acute-angled ed e which projects at an inclination downwar ly and across the sealing-seat of'the receptacle, and acap provided with means for pinching the lower margin of the gasket and having an inclined sealing portion for wedging the gasket against the sealing-seat of the receptacle.

7. A hermetic closure comprising a gasket, a fiaring cap provided with a shoulder in its roo lower portion to support the lower edge of the gasket, and a separate holder forming a downwardly-projectinglshoulder for supporting the upper edge 0 e gasket.

8. The combination with a receptacle, of a hermetic-sealing closure comprising a gasket having an acute-angled ed e which projects at an inclination downwar ly and across thesealing seat of the receptacle, a separate holder forming a downwardly projecting 9. The combination with areceptacle, of a hermetic-sealing closure, comprising a gasket havin an acute-angled edge which projects at an inclination d wnwar ly and across the sealing-seat of the eceptacle, a holder forming a. downwar y projecting shoulder for supporting the upper edge of the gasket, and

a cap having the lowered e of its rimturned inwardly beneath the gas et and having. an inclined sealing portion for wedging the gasket against the sealing-seat of the receptacle,

the cap being alsoprovided with a down-v wardly-facin groove in its top to receive t upper edge 0 the holder. M

1O. The combination with a receptscle, of ing portion for w'edging the asket against a hermetic-sealing closure comprising a gasthe sealin -seat of the rece tac e. i ket having an acute-angled edge WhlGh pro- In testimony whereof have signed my jects at an inclination downwardly and name to this specification in the pi'esence of 5 a'cll'ass tthe sealing-east of thal receptacle, a two subscribing witnesses.

ho er orming a ownwar y projecting shoulder for supporting the u per edge of the f LORENZ asket, ands cap-having the ower end of its Witnessesz ange turned under to pinch the lower mar- J AS. W. GREEN, 1 1o gin of the gasket, and having an inclined seall H. MALLNER. 

